BIOTIC ASSOCIATIONS OF COCKROACHES — ROTH & WILLIS 45 



Cutilia soror 

 Marquesas Islands. — Males under stones and dead log (Hebard, 



1933a). 



Hawaii. — In soil about roots of pineapple (lUingworth, 1927). 

 Often found about roots of grasses and weeds and other debris 

 (Williams et al., 1931). Under stones and pineapple mulching paper 

 (Fullaway and Krauss, 1945). 



Wake Island. — Numerous, some from rotten logs. Found in bunch 

 grass on Ocean Island (Bryan, 1926). 



Cutilia spp. 



Australia. — Frequent woods where they leave shelter soon after 

 sunset and run actively on ground or ascend shrubs and trees in quest 

 of prey (Tepper, 1893). 



Dendroblatta sobrina 



Panama. — Colony on tree trunk ; on surface of trunk of fallen tree 

 (Hebard, 1920). 



Diploptera punctata 



Hawaii. — "Crowds of these insects in various stages of development 

 sometimes gather in cypress trees, in suitable chinks, in old flower- 

 head sheaths of palms, etc., and even more or less openly on leafy 

 twigs, in bunch grass, and the species is at times locally abundant 

 behind the older leaf bases of sugar cane" (Williams et al., 1931). 

 Williams also lists the following as food plants: Cryptomeria, 

 algaroba, lime trees, ripening mangoes, papayas, and oranges. How- 

 ever, Bianchi (personal communication, 1954) doubted that any of 

 the above are the main dietary, because the largest populations he had 

 seen "were found in the fairly dry litter of Star Jasmine (lasminum 

 puhescens Willd.), well removed from any of the plants mentioned 

 by Williams." 



Raiatea, Society Islands. — Beaten out of bracken (Cheesman, 

 1927). 



Uahuka, Marquesas Islands. — Under bark (Hebard, 1933a). 



Dryadoblatta scotti 



Trinidad. — Very common in water-filled, epiphytic bromeliads in 

 the rain forest (see p. 31) (Princis and Kevan, 1955). 



Ectobius africanus 



Belgian Congo. — Females in forest margin and in forest under- 

 growth (Rehn, 1931). 



